for example, load more products or get single product details page...
What are you trying to achieve? Neto has built-in support for loading page sections via AJAX (mostly to allow keyhole caching). You could load entire pages dynamically by specifying an empty header and footer template. It depends what you want...
Basic load more pagination for example, so if I have 16 products I wanna load next 16 and so on.
There's no examples of this I'm aware of but it's possible with Neto's templating system. I would avoid the built-in AJAX support since it's mostly geared towards keyhole caching and probably not suitable here.
Create a new category_ajax template which just renders a list of product thumbs without all the other extraneous stuff. Then make an AJAX call to this page from your "Next Page" button, specifying the page number and no header/footer. Then just append the resulting content to the bottom of the category page. Should be relatively simple.